ON-ROAD TIRES MAKE A BUGGY FASTER THAN OFF-ROAD TIRES ?

Did GRP On-road tires make my Sworkz faster than TPro Off-road one ?
I made the test and receive suprizing results...
PRODUCTS :
- Sworkz (Discontinued, newest one) : www.donuts-rac...
- Off-Road tires : www.donuts-rac...
- On-Road tires : www.rcteam.com...

[@alfredomarin1646]

Diameter of wheels sets is different. The knobbies make the dirt tires a little taller. Plus there would be more ballooning in them, then there would be in the slicks. You can add 1 to 3 teeth to the pinion gear to compensate and even make it go a little faster.

[@Mr_B-RC]

Thanks for your help bro !